diff --git a/lib/noosfero.rb b/lib/noosfero.rb
index 720889c..26467c5 100644
--- a/lib/noosfero.rb
+++ b/lib/noosfero.rb
@@ -67,7 +67,7 @@ module Noosfero
   end
 
   def self.identifier_format
-    '[a-z0-9][a-z0-9~.]*([_\-][a-z0-9~.]+)*'
+    '[a-z0-9][a-z0-9~.*]*([_\-][a-z0-9~.*]+)*'
   end
 
   # All valid identifiers, plus ~ meaning "the current user". See
diff --git a/test/unit/noosfero_test.rb b/test/unit/noosfero_test.rb
index 46c2029..dbfbcd5 100644
--- a/test/unit/noosfero_test.rb
+++ b/test/unit/noosfero_test.rb
@@ -28,6 +28,7 @@ class NoosferoTest < ActiveSupport::TestCase
     assert_match /^#{Noosfero.identifier_format}$/, 'bli-bla'
     assert_no_match /^#{Noosfero.identifier_format}$/, 'UPPER'
     assert_match /^#{Noosfero.identifier_format}$/, 'with~tilde'
+    assert_match /^#{Noosfero.identifier_format}$/, 'with*asterisk'
     assert_match /^#{Noosfero.identifier_format}$/, 'with.dot'
   end
 
--
libgit2 0.21.2